Energy-saving high-temperature heat pump dryer

Abstract

The utility model relates to the technical field of heat pump dryers, in particular to an energy-saving high-temperature heat pump dryer which comprises a heat pump dryer body. A hollow shell is installed between the air return pipe and the air return port, through grooves are formed in the top and the bottom of the shell, and two inserting grooves are formed in the front end face of the shell. Inserting plates are inserted in the inserting grooves, mounting grooves are formed in the tops of the inserting plates, and through holes are formed in the bottoms of the mounting grooves; a dust filter screen is fixed in the opening of the frame; the filter structure is arranged between the return air inlet and the return air pipe, that is, return air enters the shell and then sequentially passes through the multiple dust filter nets, dust and the like in the return air can be intercepted and filtered under the action of the dust filter nets, and therefore impurities such as the dust can be prevented from entering the heat pump dryer; the design can reduce the possibility that dust and the like are attached, so that efficient operation of the heat exchanger is kept, the drying efficiency is improved, and the service life of the heat pump dryer can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pump dryers, in particular to an energy-saving high-temperature heat pump dryer. Background Art

[0002] Heat pump dryer is a highly efficient and energy-saving drying equipment. It uses the reverse Carnot principle to absorb heat from the air and transfer it to the drying room to increase the temperature of the drying room, thereby completing the drying of the material. The dryer is mainly composed of a compressor, a heat exchanger (internal machine), a throttle, a heat absorber (external machine) and other devices to form a circulation system.

[0003] The utility model patent with authorization announcement number CN216694404U discloses a heat pump dryer, which includes a heat pump main unit and a drying chamber, the heat pump main unit includes an air supply duct, a return air duct, a condenser circulating fan and a heating chamber, the air supply duct and the return air duct are both connected to the heating chamber, the drying chamber is connected to the air supply duct and the return air duct, the condenser is arranged in the heating chamber, the circulating fan is arranged in the air supply duct, the heat pump main unit also includes an air guide duct, the air guide duct is connected to the return air duct, a dehumidification valve is provided at the air guide duct, and a fresh air valve is provided at the heating chamber. The fresh air valve is designed at the suction port of the circulation fan, with a short straight-line distance and small wind resistance. When the fresh air valve and the dehumidification valve are opened, the circulation fan will give priority to inhaling fresh air with strong controllability, so that the air pressure in the drying chamber rises to positive pressure, and the positive pressure must be discharged through an outlet. At this time, the diversion effect of the air duct is utilized to separate a part of the air flow to the dehumidification valve to discharge excess positive pressure humid hot steam. At the same time, the discharged humid hot steam will be evenly distributed on the evaporator through the action of the external fan, so as to more fully complete the heat exchange and improve the energy efficiency of the unit, thereby realizing the use of the positive and negative pressure difference principle structure to achieve natural dehumidification and improve energy efficiency.

[0004] Although the heat pump dryer can improve the energy efficiency of the unit, the return air duct of the device still has the following shortcomings when in use: Specifically, when in use, the return air duct of the device will return the waste heat in the drying chamber to the inside of the unit. During the drying process, the material may release some dust and particles. If these dusts enter the interior of the heat pump dryer with the return air, they may adhere to the heat exchanger, fan and other key components, causing the performance of the equipment to decline. Dust and particles will not only reduce the performance of the equipment, but may also accelerate the wear and corrosion of the equipment. In view of this, we propose an energy-saving high-temperature heat pump dryer. Utility Model Content

[0005] The purpose of the utility model is to provide an energy-saving high-temperature heat pump dryer to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An energy-saving high-temperature heat pump dryer, comprising a heat pump dryer;

[0008] The heat pump dryer comprises a machine body, a fixing plate is fixed at the top of the machine body at the rear edge, an air outlet for connecting to a drying room is installed on the front face of the machine body, and a return air outlet is installed on the top of the machine body; a screw rod is rotatably installed between the rear face of the return air outlet and the fixing plate; a control cabinet is installed on the right end face of the machine body;

[0009] A return air duct for connecting to the drying room is arranged above the return air outlet, a hollow shell is installed between the return air duct and the return air outlet, through slots are provided at the top and bottom of the shell, and two slots are provided at the front face of the shell; plug-ins are inserted at the slots, a mounting slot is provided at the top of the plug-in board, and a through hole is provided at the bottom of the mounting slot; a frame is inserted in the mounting slot, and a dust filter is fixed in the opening of the frame;

[0010] A connecting plate is fixed between the front ends of the two plug plates, an extension plate is fixed at the bottom of the connecting plate, and a screw rod passes through the extension plate and is threadedly connected with the extension plate.

[0011] Preferably, two positioning blocks are fixed to the front and rear outer walls of the frame, positioning grooves are provided on the front and rear walls of the installation groove, and the positioning blocks are plugged into and matched with the positioning grooves.

[0012] Preferably, the inner cavity of the shell is provided with two limit grooves at both side walls, and both ends of the limit grooves are closed, and the two side walls of the plug plate are fixed with limit blocks at the rear end, and the limit blocks are slidably connected to the limit grooves.

[0013] Preferably, the dust filter screen, the through hole and the through groove are all on the same vertical plane, and the width of the dust filter screen is greater than the diameter of the through hole.

[0014] Preferably, a handwheel is installed at the rear end of the screw rod, and the handwheel is coaxially keyed to the screw rod.

[0015] Preferably, the top of the machine body is fixedly connected with two guide rails by bolts, and the bottom of the extension plate is provided with two guide grooves, and the guide grooves are slidably connected with the guide rails.

[0016] Preferably, the shell is made of stainless steel, and the shell is fixedly connected to the return air duct and the return air outlet by bolts.

[0017] Preferably, the cross-sectional shape of the frame is in a square shape, and the size of the frame is matched with the size of the mounting groove.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. Through the filter structure set between the return air port and the return air duct: that is, the return air will pass through multiple dust filters in sequence when entering the shell. Under the action of the dust filter, the dust in the return air can be intercepted and filtered, so as to prevent dust and other impurities from entering the heat pump dryer; this design can reduce the possibility of dust adhesion, thereby maintaining the efficient operation of the heat exchanger, improving the drying efficiency, and extending the service life of the heat pump dryer;

[0020] 2. By rotating the screw rod to make the connecting plate move horizontally, the plug plate can be driven to move horizontally and detach from the shell, thereby facilitating the removal of the frame to clean the dust filter, thereby ensuring the efficient filtering effect of the dust filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the machine body in the utility model;

[0023] Figure 3 This is one of the schematic diagrams of a partial explosion structure in the utility model;

[0024] Figure 4 This is the second schematic diagram of a partial explosion structure in the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the plug board in the utility model;

[0026] Figure 6 It is a structural schematic diagram of the frame in the utility model.

[0027] In the figure:

[0028] 1. Heat pump dryer; 10. Machine body; 101. Fixing plate; 102. Guide rail; 11. Return air outlet; 12. Screw rod; 121. Hand wheel; 13. Shell; 131. Through slot; 132. Limiting slot; 133. Slot; 14. Connecting plate; 141. Extension plate; 1411. Guide slot; 15. Insert plate; 151. Mounting slot; 152. Through hole; 153. Positioning slot; 154. Limiting block; 16. Frame; 161. Dust filter; 162. Positioning block; 17. Return air duct; 18. Control cabinet; 19. Air outlet. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] This embodiment provides a technical solution:

[0031] See also Figure 1-Figure 6 An energy-saving high-temperature heat pump dryer includes a heat pump dryer 1. The heat pump dryer 1 includes a body 10, a fixing plate 101 is fixed at the top of the body 10 at the rear edge, an air outlet 19 for connecting to a drying room is installed on the front face of the body 10, and a return air outlet 11 is installed on the top of the body 10; a screw rod 12 is rotatably installed between the rear end face of the return air outlet 11 and the fixing plate 101; a control cabinet 18 is installed on the right end face of the body 10; a return air duct 17 for connecting to a drying room is provided above the return air outlet 11, a hollow shell 13 is installed between the return air duct 17 and the return air outlet 11, and the top of the shell 13 The top and bottom of the shell 13 are provided with through grooves 131, and the front end surface of the shell 13 is provided with two slots 133; the slots 133 are each inserted with a plug board 15, the top of the plug board 15 is provided with a mounting groove 151, and the bottom of the mounting groove 151 is provided with a through hole 152; a frame 16 is inserted into the mounting groove 151, and a dust filter 161 is fixed in the opening of the frame 16; a connecting plate 14 is fixed between the front ends of the two plug boards 15, and an extension plate 141 is fixed to the bottom of the connecting plate 14, and the screw rod 12 passes through the extension plate 141 and is threadedly connected to the extension plate 141.

[0032] In this embodiment, two positioning blocks 162 are fixed to the front and rear outer walls of the frame 16, and positioning grooves 153 are provided on the front and rear walls of the installation groove 151, and the positioning blocks 162 are plugged into and matched with the positioning grooves 153. This design can improve the stability and accuracy of the frame 16 in the installation groove 151 and prevent shaking or misalignment during use.

[0033] In this embodiment, two limiting grooves 132 are provided at both side walls of the inner cavity of the housing 13, and both ends of the limiting grooves 132 are closed, and limiting blocks 154 are fixed at the rear end of both side walls of the plug board 15, and the limiting blocks 154 are slidably connected to the limiting grooves 132. This design can limit the moving direction and range of the plug board 15 in the housing 13, ensure that the plug board 15 can move steadily and smoothly, and improve the connection stability between the plug board 15 and the housing 13.

[0034] In this embodiment, the dust filter 161, the through hole 152 and the through slot 131 are all on the same vertical plane, and the width of the dust filter 161 is greater than the diameter of the through hole 152. This design facilitates the return gas to enter the interior of the machine body 10 through the dust filter 161, the through hole 152 and the through slot 131 in sequence, and facilitates filtering the return gas through the dust filter 161.

[0035] In this embodiment, a hand wheel 121 is installed at the rear end of the screw rod 12, and the hand wheel 121 is coaxially keyed with the screw rod 12. The screw rod 12 can be easily rotated by turning the hand wheel 121, thereby adjusting the horizontal position, and the operation is simple and convenient.

[0036] In this embodiment, the top of the body 10 is fixedly connected with two guide rails 102 by bolts, and the bottom of the extension plate 141 is provided with two guide grooves 1411, and the guide grooves 1411 are slidably connected with the guide rails 102. This design can ensure that the extension plate 141 maintains stability and smoothness during movement, thereby ensuring the stability of the connecting plate 14.

[0037] In this embodiment, the housing 13 is made of stainless steel, and the housing 13 is fixedly connected to the return air duct 17 and the return air port 11 by bolts. Stainless steel has the advantages of corrosion resistance, high temperature resistance, and high strength, which ensures the service life of the housing 13, and the bolt fixing method is reliable and stable.

[0038] In this embodiment, the cross-section of the frame 16 is in a square shape, and the size of the frame 16 matches the size of the installation slot 151. This design can improve the structural strength and stability of the frame 16, and at the same time make the frame 16 easy to install and remove.

[0039] It should be added that the connecting plate 14 and the extension plate 141 in the present embodiment are an integrally formed structure. The integrally formed design can increase the structural strength of the connecting plate 14 and the extension plate 141, ensure the connection reliability of the connecting plate 14 and the extension plate 141, and facilitate driving the plug plate 15 to move horizontally through the connecting plate 14.

[0040] When in use, the return air flows back from the drying room to the return air duct 17, and enters the housing 13 through the return air duct 17. At this time, the return air passes through the plurality of dust filters 161 and the through holes 152 from top to bottom. The dust in the return air is filtered by the dust filter 161, and the filtered gas flows back to the inside of the machine body 10 through the return air port 11.

[0041] When it is necessary to disassemble the frame 16, the user first rotates the handwheel 121, and the handwheel 121 drives the screw rod 12 to rotate. As the screw rod 12 rotates, the extension plate 141 drives the connecting plate 14 to move horizontally, and the connecting plate 14 drives the plug plate 15 to move horizontally, and the plug plate 15 moves horizontally along the slot 133. When the limit block 154 moves to the end of the limit slot 132, the user stops rotating the handwheel 121. At this time, the frame 16 is exposed. The user lifts the frame 16 upward, and the frame 16 is separated from the installation slot 151. The frame 16 is removed, and the dust filter 161 can be cleaned.

[0042] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An energy-saving high-temperature heat pump dryer, comprising a heat pump dryer (1), characterized in that: The heat pump dryer (1) comprises a machine body (10), a fixing plate (101) is fixed at the top of the machine body (10) at the rear edge, an air outlet (19) for connecting to a drying room is installed at the front end surface of the machine body (10), and a return air outlet (11) is installed at the top of the machine body (10); a screw rod (12) is rotatably installed between the rear end surface of the return air outlet (11) and the fixing plate (101); and a control cabinet (18) is installed at the right end surface of the machine body (10); A return air duct (17) for connecting to a drying room is arranged above the return air outlet (11); a hollow shell (13) is installed between the return air duct (17) and the return air outlet (11); through grooves (131) are provided at the top and bottom of the shell (13); two slots (133) are provided at the front end surface of the shell (13); plug boards (15) are inserted into the slots (133); a mounting groove (151) is provided at the top of the plug board (15); a through hole (152) is provided at the bottom of the mounting groove (151); a frame (16) is inserted into the mounting groove (151); a dust filter (161) is fixed in the opening of the frame (16); A connecting plate (14) is fixed between the front ends of the two plug plates (15), an extension plate (141) is fixed to the bottom of the connecting plate (14), and the screw rod (12) passes through the extension plate (141) and is threadedly connected to the extension plate (141).

2. The energy-saving high-temperature heat pump dryer according to claim 1, characterized in that: Two positioning blocks (162) are fixed on the front and rear outer walls of the frame (16), and positioning grooves (153) are provided on the front and rear walls of the installation groove (151), and the positioning blocks (162) are plugged into and matched with the positioning grooves (153).

3. The energy-saving high-temperature heat pump dryer according to claim 1 is characterized in that: The inner cavity of the shell (13) is provided with two limit grooves (132) at both side walls, and both ends of the limit grooves (132) are closed. The two side walls of the plug plate (15) are fixed with limit blocks (154) at the rear end, and the limit blocks (154) are slidably connected to the limit grooves (132).

4. The energy-saving high-temperature heat pump dryer according to claim 1, characterized in that: The dust filter net (161), the through hole (152) and the through groove (131) are all located on the same vertical plane, and the width of the dust filter net (161) is greater than the diameter of the through hole (152).

5. The energy-saving high-temperature heat pump dryer according to claim 1, characterized in that: A hand wheel (121) is installed at the rear end of the screw rod (12), and the hand wheel (121) is coaxially key-connected with the screw rod (12).

6. The energy-saving high-temperature heat pump dryer according to claim 1, characterized in that: The top of the machine body (10) is fixedly connected to two guide rails (102) by bolts, and the bottom of the extension plate (141) is provided with two guide grooves (1411), and the guide grooves (1411) are slidably connected to the guide rails (102).

7. The energy-saving high-temperature heat pump dryer according to claim 1, characterized in that: The shell (13) is a product made of stainless steel, and the shell (13) is fixedly connected to the return air duct (17) and the return air port (11) by means of bolts.

8. The energy-saving high-temperature heat pump dryer according to claim 1, characterized in that: The cross-sectional shape of the frame (16) is in the shape of a square, and the size of the frame (16) is compatible with the size of the installation groove (151).

Images